Mechanistic Study and Application of Anionic/Cationic Combination Collector ST-8 for the Flotation of Spodumene

The mechanism of anionic/cationic combination collector ST-8 for the efficient separation spodumene and feldspar was investigated by flotation tests, surface tension measurements, zeta potential measurements infrared spectroscopy analysis. results indicated that when optimum molar ratio sodium oleate dodecylamine 6:1–10:1 pH = 8.5, recovery reached a maximum 80% about 24.5%. Zeta showed negative shift kinetic on much stronger than feldspar, indicating adsorption capacity combined greatly different. From as well synergistic parameters, there strong mutual attraction between oleate, significant effect them. Infrared chemisorbed mineral surface, intensity absorption peak after action feldspar. solution chemistry revealed at positively charged ions RNH3+ (RNH3+)22+ in negatively RCOO− (RCOO−)22− oleic acid form highly reactive complexes to interact with electrostatic gravitation, thus achieving Finally, from closed-circuit test results, index 6.34% Li2O grade 88.51% obtained.